Cheapest priced copy (Innistrad: Double Feature): $0.49 at Card Kingdom, near mint, their price list as of .
Vadrik, Astral Archmage 
Legendary Creature — Human Wizard · 1/2 · Rare · Innistrad: Midnight Hunt · #248
If it's neither day nor night, it becomes day as Vadrik enters.
Instant and sorcery spells you cast cost {X} less to cast, where X is Vadrik's power.
Whenever day becomes night or night becomes day, put a +1/+1 counter on Vadrik.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad: Double Feature | 248 | Rare | $0.49 | $4.49 |
| Innistrad: Midnight Hunt | 248 | Rare | $0.49 | $0.49 |
| Innistrad: Midnight Hunt | 325 | Rare | $0.49 | $0.99 |
| Innistrad: Midnight Hunt Promos | 248p | Rare | $0.69 | $1.49 |
| Innistrad: Midnight Hunt Promos | 248s | Rare | — | $0.99Out of stock |
6 rulings from Wizards of the Coast
- 24 September 2021If it is night, and the active player of the previous turn cast two or more spells during their turn, it becomes day.
- 24 September 2021All costs to cast a spell are locked in before mana abilities are activated and those costs are paid. If Vadrik's power changes after costs are locked in, or if Vadrik leaves the battlefield while you are activating mana abilities or paying those costs, the cost reduction effect won't be affected and the total cost to cast the spell won't change.
- 24 September 2021Day and night are designations that the game itself can have. The game starts as neither. Once the game becomes day (or less commonly, night), the game will be exactly one of them—day or night—going back and forth for the rest of the game.
- 24 September 2021If a triggered ability triggers whenever day becomes night or night becomes day, it only triggers if it was already either day/night and becomes the other. It does not trigger when the game becomes day or night for the first time.
- 24 September 2021Before a player untaps their permanents during the untap step, the game checks to see if the day/night designation should change.
- 24 September 2021If it is day, and the active player of the previous turn cast no spells during their turn, it becomes night.